著者

天藤 雅之 竹下 哲郎 中澤 崇徳 木村 英隆 安保 秀雄

出版者

The Iron and Steel Institute of Japan

雑誌

鉄と鋼 (ISSN:00211575)

巻号頁・発行日

vol.79, no.1, pp.98-104, 1993-01-01 (Released:2009-06-30)

参考文献数

14

被引用文献数

14 21

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Room temperature creep behavior has been investigated for typical stainless steels (SUS304, SUS430, SUS410L). The mechanism of creep is discussed in comparison with creep data on a carbon steel (SM400).The results are summerized as follows:1) Stainless steels showed creep deformation at a stress around 0.2% proof stress. Though creep rate decreased monotonously with increase in time, deformation did not ceased even at a time 1000 h. The creep curve of SUS304 steel followed a logarithmic creep law.2) No creep was observed in steel SM400 below a critical strain rate at around 10-8S-1.3) The facts that interstitial free steels showed room temperature creep, and that SUS304 steel showed no creep at 300°C suggest that the suppression of creep can be attributed to the dynamic strain aging due to the interaction between dislocation and interstitial carbon and nitrogen atoms.

著者

稗方 和夫 内藤 紀彦 大和 裕幸 安藤 英幸 中澤 崇

出版者

公益社団法人日本船舶海洋工学会

雑誌

日本船舶海洋工学会論文集 (ISSN:18803717)

巻号頁・発行日

no.2, pp.131-137, 2005-12

被引用文献数

5

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It's getting more important to transfer knowledge from elder experts to young engineers especially in shipbuilding industry in Japan. We developed knowledge transfer system based on UT-ESS (University of Tokyo Educational Software for Shipbuilding) and proposed a method to acquire knowledge of elder experts using the developed system. The system describes design process as workflows and design documents are associated with tasks in workflows. The association between design process and design documents is described by metadata based on semantic web technology. The proposed method is evaluated through a case study of knowledge acquisition in basic design department in four shipbuilding companies.

著者

稗方 和夫 大和 裕幸 安藤 英幸 榎本 昌一 中澤 崇 ロジャナカモンサン ピルン 尾石 航

出版者

公益社団法人 日本船舶海洋工学会

雑誌

日本船舶海洋工学会論文集 = Journal of the Japan Society of Naval Architects and Ocean Engineers (ISSN:18803717)

巻号頁・発行日

no.4, pp.81-88, 2006-12-01

参考文献数

13

被引用文献数

3

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It's getting more important to transfer knowledge from elder experts to young engineers especially in shipbuilding industry in Japan. We proposed a method to support knowledge transfer and developed a system based on workflow concept. From the case study in our prior report, the method and the system were proved to be useful for knowledge acquisition in design department. At the same moment, several problems are found during the case study. To resolve these problems, a formal process description method using semantic web technology is introduced and developed. The newly proposed method for formal process description and the developed system are evaluated in experimental use for CAD operation.